package main

import (
	"time"
	"fmt"
)

func main(){

	now := time.Now()
	fmt.Println(now.Format("2006/01/02 15:04:15"))
	now1 := time.Now().UnixNano()
	time.Sleep(time.Microsecond)
	now2 := time.Now().UnixNano()
	fmt.Println((now2-now1)/1000)
}
